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Development of a Machine Learning Method for Extracting Debris Flow Hazard Basins Focused on Debris Flow Fans

Research Project

Project/Area Number 21K05674
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionHokkaido Research Organization

Principal Investigator

Koshimizu Ken'ichi  地方独立行政法人北海道立総合研究機構, 産業技術環境研究本部 エネルギー・環境・地質研究所, 研究主任 (30636171)

Co-Investigator(Kenkyū-buntansha) 石丸 聡  地方独立行政法人北海道立総合研究機構, 産業技術環境研究本部 エネルギー・環境・地質研究所, 部長 (50446366)
今泉 文寿  静岡大学, 農学部, 教授 (80378918)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords沖積錐 / 土石流 / 機械学習 / GIS / 地形・地質
Outline of Research at the Start

近年の気候変動に伴い日本各地の山地流域で土石流の発生が頻発し、人命をはじめ多大な被害を生じている。効果的・効率的に土石流災害対策を推進するには、土石流危険流域を的確に抽出することが急務である。本研究では、機械学習を用いて土石流の発生ポテンシャルが高い山地流域を抽出する手法を構築する。機械学習では、沖積錐(土石流扇状地)を手がかりに、その後背の山地流域における地形・地質因子を教師データとして分析する。これにより土石流の発生に寄与する後背山地流域の地形・地質条件およびそれらの寄与の度合いを定量的に明らかにする。さらに災害履歴により検証することで、有効性の高い手法を確立する。

Outline of Final Research Achievements

We investigated the morphological conditions of a drainage basins that contribute to the formation of debris flow fans using decision tree analysis and field surveys. The analysis was conducted at two sites with distinct rock strengths: Neogene sedimentary rock and Paleogene accretionary complex sites. Many debris flow fans are distributed in these sites. Decision tree analysis was used with the presence or absence of debris flow fans as the objective variable and the morphological variables of the drainage basin as explanatory variables. The first and second important morphological factors affecting the presence or absence of debris flow fans in both sites were relief ratio and most frequent slope gradient, respectively. However, the threshold of morphological parameters needed to form debris flow fans differed depending on the geological features. We also confirmed the history of debris flow occurrences in basins where debris flow fans were estimated by decision tree analysis.

Academic Significance and Societal Importance of the Research Achievements

土石流危険流域の指定に際し、従来は様々な地質分布域の流域において、客観的かつ的確な判別基準を定めるための科学的手法の確立が不足していた。機械学習を用いた本手法は、沖積錐形成に寄与する流域の地形条件を定量的に把握でき、様々な地質分布域の土石流発生ポテンシャルの評価が可能になる。加えて、河川の浸食や人工改変により実際には沖積錐が発達しない流域においても、潜在的な土石流発生のポテンシャルを把握することに活用できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (36 results)

All 2024 2023 2022 2021

All Journal Article (17 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 15 results,  Open Access: 14 results) Presentation (19 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Morphological characteristics and conditions of drainage basins contributing to the formation of debris flow fans: an examination of regions with different rock strength using decision tree analysis2024

    • Author(s)
      Koshimizu Ken'ichi、Ishimaru Satoshi、Imaizumi Fumitoshi、Kawakami Gentaro
    • Journal Title

      Natural Hazards and Earth System Sciences

      Volume: 24 Issue: 4 Pages: 1287-1301

    • DOI

      10.5194/nhess-24-1287-2024

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Depth-averaged mixture model for development processes of debris flows over a steep unsaturated mobile bed2024

    • Author(s)
      Takayama Shoki、Karasawa Reo、Imaizumi Fumitoshi
    • Journal Title

      Landslides

      Volume: - Issue: 6 Pages: 1173-1187

    • DOI

      10.1007/s10346-023-02202-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Field monitoring of pore water pressure in fully and partly saturated debris flows at Ohya landslide scar, Japan2024

    • Author(s)
      Oya Shunsuke、Imaizumi Fumitoshi、Takayama Shoki
    • Journal Title

      Earth Surface Dynamics

      Volume: 12 Issue: 1 Pages: 67-86

    • DOI

      10.5194/esurf-12-67-2024

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time-Series Variation of Landslide Expansion in Areas with a Low Frequency of Heavy Rainfall2023

    • Author(s)
      Koshimizu Ken’ichi、Uchida Taro
    • Journal Title

      Geosciences

      Volume: 13 Issue: 10 Pages: 314-314

    • DOI

      10.3390/geosciences13100314

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Debris-flow activity in the Japanese Alps is controlled by extreme precipitation and ENSO ? Evidence from multi-centennial tree-ring records2023

    • Author(s)
      Ballesteros-Canovas, J.A., Kariya, Y., Imaizumi, E., Manchado, A.M.T., Nishii, R., Matsuoka, N. and Stoffel, M.
    • Journal Title

      Global and Planetary Change

      Volume: 231 Pages: 104296-104296

    • DOI

      10.1016/j.gloplacha.2023.104296

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Initiation and runout characteristics of partially saturated debris flows in Ohya landslide scar, Japan2023

    • Author(s)
      Imaizumi Fumitoshi、Oya Shunsuke、Takayama Shoki
    • Journal Title

      E3S Web of Conferences

      Volume: 415 Pages: 03013-03013

    • DOI

      10.1051/e3sconf/202341503013

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental study on the effects of local sediment accumulation on a debris flow surge in a steep channel2023

    • Author(s)
      Takayama Shoki、Hayashi Naoya、Imaizumi Fumitoshi
    • Journal Title

      E3S Web of Conferences

      Volume: 415 Pages: 01026-01026

    • DOI

      10.1051/e3sconf/202341501026

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of coarse particles on downstream face erosion processes and outflow discharge during the overtopping of a landslide dam2023

    • Author(s)
      Takayama Shoki、Imaizumi Fumitoshi
    • Journal Title

      Landslides

      Volume: 20 Issue: 2 Pages: 351-366

    • DOI

      10.1007/s10346-022-01973-w

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of water infiltration into an unsaturated streambed on debris flow development2022

    • Author(s)
      Takayama Shoki、Satofuka Yoshifumi、Imaizumi Fumitoshi
    • Journal Title

      Geomorphology

      Volume: 409 Pages: 108269-108269

    • DOI

      10.1016/j.geomorph.2022.108269

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Seismic waves excited by debris flows at Meakandake volcano on 20 May 20082022

    • Author(s)
      小木曽 仁, 石丸 聡
    • Journal Title

      Journal of the Japan Landslide Society

      Volume: 59 Issue: 4 Pages: 146-151

    • DOI

      10.3313/jls.59.146

    • ISSN
      1348-3986, 1882-0034
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Debris flows caused by heavy rain during the soil-freezing and snow-melting season :2022

    • Author(s)
      石丸 聡, 小木曽 仁, 伊藤 陽司, 槇納 智裕
    • Journal Title

      Journal of the Japan Landslide Society

      Volume: 59 Issue: 2 Pages: 41-49

    • DOI

      10.3313/jls.59.41

    • ISSN
      1348-3986, 1882-0034
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Debris flow disaster in Atami, Japan, in July 20212022

    • Author(s)
      Imaziumi, F., Osanai, N., Kato, S., Koike, M., Kosugi, K., Sakai, Y., Sakaguchi, H., Satofuka, Y., Takayama, S., Tanaka, T., Nishi, Y.
    • Journal Title

      International Journal of Erosion Control Engeneering

      Volume: 15 Pages: 1-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 令和3年7月静岡県熱海市で発生した土石流災害2022

    • Author(s)
      今泉文寿,小山内信智,加藤真雄,小池優,小杉賢一朗,坂井祐介,坂口 宏,里深好文,高山翔揮,田中隆文,西陽太郎
    • Journal Title

      砂防学会誌

      Volume: 74 Pages: 34-42

    • NAID

      40022812078

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 地震による崩壊裸地斜面の降雨・融雪に伴う土砂動態:高頻度UAV-SfM 測量による検討2021

    • Author(s)
      輿水健一, 石丸 聡, 川上源太郎, 中田康隆, 高見雅三, 卜部厚志
    • Journal Title

      砂防学会誌

      Volume: 74 Pages: 26-36

    • NAID

      40022716737

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temporal changes in the debris flow threshold under the effects of ground freezing and sediment storage on Mt. Fuji2021

    • Author(s)
      Imaizumi, F., Ikeda, A., Yamamoto, K., Ohsaka, O.
    • Journal Title

      Earth Surface Dynamics

      Volume: 9 Issue: 6 Pages: 1381-1398

    • DOI

      10.5194/esurf-9-1381-2021

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 厚真町東和地区における胆振東部地震後の崩壊斜面の土砂動態2021

    • Author(s)
      輿水健一,石丸 聡,川上 源太郎,高見 雅三,卜部 厚志
    • Journal Title

      エネ環地研報告

      Volume: 1 Pages: 45-52

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Journal Article] 褶曲構造に規制された胆振東部地震による地震地すべりの分布2021

    • Author(s)
      川上 源太郎,輿水 健一,小安 浩理
    • Journal Title

      エネ環地研報告

      Volume: 1 Pages: 9-20

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Presentation] 決定木分析により推定された土石流発生流域の検証2023

    • Author(s)
      輿水健一, 石丸聡, 今泉文寿, 川上源太郎
    • Organizer
      R5年度砂防学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 富士山大沢川において地盤凍結が土砂生産・流下特性へ与える影響2023

    • Author(s)
      今泉文寿, 池田敦, 逢坂興宏, 柏原佳明, 西村直記
    • Organizer
      R5年度砂防学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 荒廃渓流源頭部における土石流流下特性と間隙水圧との関係2023

    • Author(s)
      高橋英成, 今泉文寿, 高山翔揮, 蓮容龍信
    • Organizer
      R5年度砂防学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 渓流源頭部における土石流の発生・発達過程に関する研究2023

    • Author(s)
      高山翔揮, 今泉文寿
    • Organizer
      R5年度砂防学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Grain Size Distribution Characteristics of Debris Flow Torent in Ohya Landslide, Central Japan2023

    • Author(s)
      Dahal., S., Imaizumi, F.
    • Organizer
      Japan Geoscience Union 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Field monitoring of pore-water pressure in debris flow2023

    • Author(s)
      Imaizumi, F., Oya, S., Takayama, S.
    • Organizer
      Japan Geoscience Union 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 周氷河斜面周辺の崩壊発生場と形態的特徴2023

    • Author(s)
      石丸 聡, 仁科健二, 加瀬善洋, 小安浩理, 輿水健一, 川上源太郎, 田近 淳
    • Organizer
      令和5年度(社)日本地すべり学会・北海道地すべり学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 北海道胆振東部地震による地すべりの発生場の特徴:震央南側の地域を中心に2023

    • Author(s)
      石丸 聡,宇佐見星弥,佐藤浩,金子 誠,中埜貴元
    • Organizer
      第62回日本地すべり学会研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 化石周氷河斜面で発生する深層タイプ崩壊の発生場の特徴2023

    • Author(s)
      石丸 聡, 仁科健二, 川上源太郎, 加瀬善洋, 小安浩理, 輿水健一
    • Organizer
      日本地形学連合2023年秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 決定木分析により推定された土石流発生流域の検証2023

    • Author(s)
      輿水健一、石丸 聡、今泉文寿、川上源太郎
    • Organizer
      令和5年度砂防学会研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] 近年の多雨化に伴う北海道の化石周氷河斜面の崩壊・浸食について2023

    • Author(s)
      石丸 聡
    • Organizer
      日本地理学会2023年春季学術大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 天然ダムに含まれる巨礫が越流侵食過程と洪水流出過程に与える影響2022

    • Author(s)
      髙山翔揮、今泉文寿
    • Organizer
      令和4年度砂防学会研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] Runout characteristics of debris flow under effects of ground freezing on Mt. Fuji2022

    • Author(s)
      Imaizumi, F., Yamamoto, R., Ikeda, A.
    • Organizer
      Japan Geoscience Union 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] DEM を用いた周氷河斜面の抽出に 向けた検討2022

    • Author(s)
      輿水健一、石丸 聡、濱原和広
    • Organizer
      日本地形学連合 2022 年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 礼文島の大雨による斜面崩壊と発生場の特徴 ―2014年,2020年災害の事例より―2022

    • Author(s)
      石丸 聡、仁科健二、加瀬善洋、小安浩理、高見雅三、輿水健一、雨宮和夫
    • Organizer
      令和4年度日本地すべり学会・北海道地すべり学会研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] 礼文島の2014年,2020年豪雨による斜面崩壊と発生場の特徴2022

    • Author(s)
      石丸 聡、仁科健二、加瀬善洋、小安浩理、高見雅三、輿水健一
    • Organizer
      日本地形学連合2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 地質の違いに着目した土石流発生に寄与する地形因子の検討: 沖積錐分布に基づく決定木分析2022

    • Author(s)
      輿水健一,石丸 聡,今泉文寿,川上源太郎
    • Organizer
      令和4年度(公社)砂防学会研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 沖積錐分布に基づく決定木分析を用いた潜在的な土石流危険流域の抽出2021

    • Author(s)
      輿水健一,川上源太郎,石丸 聡
    • Organizer
      日本地すべり学会 第60回(2021年度)研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 北海道日勝峠周辺の周氷河斜面で発生した2016年豪雨による斜面崩壊2021

    • Author(s)
      石丸 聡,川上源太郎,輿水健一,小安浩理,加瀬善洋,高見雅三,廣瀬 亘,仁科健二
    • Organizer
      日本地形学連合2021年秋季大会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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